ua-tracer by Paul Kinlan

ua-tracer

what does a user agent actually fetch, follow & run?

← all traces

Trace DSUKmJWc

First seen: 2026-07-02 18:55:59.985 UTC
User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:33.0) Gecko/20100101 Firefox/33.0
Bot verification: Not a known bot (no IP-range check applies).

What this user agent did

Directly-referenced assets:

✗ fetched CSS ✗ fetched JS ✗ fetched image ✗ fetched font (HTML)

Document-level link hints:

✗ fetched favicon ✗ fetched apple-touch-icon ✗ fetched web manifest ✗ fetched preload ✗ fetched prefetch

Second-level follows (proves it parsed the linking file):

✗ followed CSS background-image ✗ followed CSS @font-face ✗ followed manifest icon ✗ followed CSS @import

Frames (does it descend into iframes?):

✗ fetched iframe document ✗ descended into iframe (loaded inner image)

Reporting (a report-only CSP is violated by inline styles; reports can arrive via HTTP headers with no JS, or via in-page beacons):

✗ sent a CSP/Reporting report (any path) ✗ delivered via report-uri/Report-To header (no JS) ✗ delivered via in-page beacon (securitypolicyviolation / ReportingObserver)

Social embed (Open Graph / Twitter card images):

✗ fetched og:image ✗ fetched twitter:image

JavaScript execution:

✗ EXECUTED classic JS ✗ EXECUTED ES module ✗ posted client timing

Server-side request waterfall

Every request the server received for this trace, in receive order. +ms is the delta from the homepage request.

ReceivedΔKindMethodUser-Agent
2026-07-02 18:55:59.985 UTC +0 ms homepage GET Mozilla/5.0 (Windows NT 6.3; WOW64; rv:33.0) Gecko/20100101 Firefox/33.0
request headers (16) 
{
  "accept": "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8",
  "accept-encoding": "gzip",
  "accept-language": "en-US,en;q=0.5",
  "cache-control": "no-cache",
  "connection": "keep-alive",
  "cookie": "SP1038_consent=2; EuConsent=BOQX9zuOQX90GAOABCENBFqAAAAcZSfJfcoD54fB0vdlVkRbAn6AwUCQwAQ4PEYHIAAygQBBegAgQBAIidwJAAQQMARABYACAEgAAiICoA; B=fqju2r1femtp1&b=3&s=ov; zonconsent=2026-07-02T18:55:59.497Z; TDFM_consent=2; NT_consent=2; nl_cookiewall_version=4",
  "host": "uatracer.com",
  "pragma": "no-cache",
  "traceparent": "00-c8f200f851a8ad0e2ec2fd75359a15e2-3c1a6df82b913039-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (Windows NT 6.3; WOW64; rv:33.0) Gecko/20100101 Firefox/33.0",
  "via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-c8f200f851a8ad0e2ec2fd75359a15e2-8610b42cc5e34b2b-01",
  "x-deno-userspace-tracestate": "",
  "x-nw-header": "zauwivoeVcGOhOWuJMzFy5xNjAaMQo9BugjVDL8yJ8UxpdggwXvYRC0l6KnsVr3U",
  "x-px-access-token": "y6yfRzyuWHdDffrLhK8j3FBjI5cud8QVpiWhYCQISpwXRd96Mgppclk9GtGpX42n"
}